Irrelevant
Irrelevant adjective - Not having anything to do with the matter at hand.
Usage example: irrelevant questions that merely disrupted the classroom lesson
Material is an antonym for irrelevant.
Material
Material adjective - Having to do with the matter at hand.
Usage example: that information, while fascinating, is not material to our discussion
Both words in one sentence
- True of The Culture, but then the Culture is also considered a post-scarcity society, so material concerns are relatively irrelevant.
Source: No Poverty - Even if they are not directly irrelevant or contradictory to the material in the books, you occasionally need some imagination to make them fit the text within.
Source: Tabletop Game / Eon - Much of his dialogue is genuine filibuster material—irrelevant side trips onto topics like whiskey and chili that leave the Romulans scratching their heads, though he gets in a number of subtle jabs at the Romulan government.
Source: Holding the Floor
Cite this Source
Material and Irrelevant. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/irrelevant/material
Irrelevant & Material. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/irrelevant/material>.
Material or Irrelevant. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/irrelevant/material.
Google Ngram Viewer shows how "irrelevant" and "material" have occurred on timeline